Use configured ip, Primary ip, Backup – Grandstream HT503 User Manual User Manual
Page 43: Backup ip2, Reregister before expiration

FIRMWARE VERSION 1.0.14.1
HT503 USER MANUAL
Page 41 of 64
SIP User ID
User account information, provided by VoIP service provider (ITSP), usually has the
form of digit similar to phone number or actually a phone number. This field contains
the user part of the SIP address for this phone. e.g., if the SIP address is
sip:my_user_id@my_provider.com, then the SIP User ID is: my_user_id.
Do NOT
include the preceding “sip:” scheme or the host portion of the SIP address in
this field.
Authenticate ID
ID used for authentication, usually same as SIP user ID, but could be different and
decided by ITSP.
Authentication Password
Password for ATA to register to (SIP) servers of ITSP. Purposely left blank once saved
for security. Maximum length is 25.
Name
SIP service subscriber’s name which will be used for Caller ID display
DNS mode
One from the 3 modes available for “DNS Mode” configuration:
-A Record (for resolving IP Address of target according to domain name)
-SRV (DNS SRV resource records indicates how to find services for various protocols)
-NAPTR/SRV (Naming Authority Pointer according to RFC 2915)
-Use Configured IP (Use the three configured IP address instead of any DNS query)
One mode can be chosen for the client to look up server.
The d
efault value is “A Record”
Primary IP
Configure the primary IP for DNS Mode: Use Configured IP
Backup IP1
Configure the first backup IP for DNS Mode: Use Configured IP
Backup IP2
Configure the second backup IP for DNS Mode: Use Configured IP
Tel URI
Th
e default setting is “Disabled”. If the phone has an assigned PSTN Number, this field
should be set to “User=Phone” then a “User=Phone” parameter will be attached to the
“From header” in the SIP request to indicate the E.164 number. If server supports TEL
URI format, then this option needs to be selected.
SIP Registration
This parameter controls whether the HT503 needs to send REGISTER messages to
the proxy server. The default setting is “Yes”.
Unregister on Reboot
Default is No. If set to yes, the device will first send registration request to remove all
previous bindings. Use only if proxy supports this remove bindings request.
Outgoing Call w/o
Registration
This parameter allows users place outgoing calls even when not registered (if allowed
by ITSP) but
it’s unable to receive incoming calls.
Register Expiration
This parameter allows the user to specify the time frequency (in minutes) the
HandyTone ATA refreshes its registration with the specified registrar. The default
interval is 60 minutes (or 1 hour). The maximum interval is 65535 minutes (about 45
days).
Reregister before
Expiration
This parameter allows the user to specify the reregistration time before expiration.